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单选题
Enter the entry/exit corridor only when the engine is at idle and you have positive communication with the flight compartment.
A
Only when the engine is at idle speed and has active communication with the flight cabin, can you enter and exit the corridor.
B
Only when the engine is running at idle speed and you have good contact with the cockpit, can you enter the access corridor.
C
Enter / exit the corridor only when the engine is at idle state and in good contact with the cabin.
答案解析
正确答案：A
